What is the solution to abnormal temperature in a constant temperature and humidity test chamber? There are many high temperature areas on the earth, the most obvious being the desert areas. With the development of science and technology, the scope of people’s activities has also entered. In the desert, any item used in the desert must be able to withstand high temperatures and even low temperatures. The desert night temperature contrast is very large.
Continuous casting slabs or primary rolling slabs are used as raw materials, heated by a stepping furnace, and dephosphorized by high-pressure water, and then enter the roughing mill. The rough rolling material is cut through the head, tail, and then into the finishing mill, and computer-controlled rolling is carried out. After the final rolling, it will go through laminar cooling (computer-controlled cooling rate) and take-up by the coiler to become a straight hair coil. The head and tail of straight hair curls tend to be tongue-shaped and fish-tailed, with poor thickness and width accuracy, and often have wavy, folded, tower-shaped and other defects on the edges. The coil is heavier and the inner diameter of the steel coil is 760mm. (Generally used in the pipe-making industry.) After straightening the hair through the cutting head, tail cutting, trimming and multi-pass straightening and smoothing finishing lines, and then cutting or re-rolling, it becomes: hot rolling steel plates, flat hot rolled steel coils, slitting tapes and other products. If the hot-rolled finishing coil is pickled to remove scale and coated with oil, it will become a hot-rolled pickled coil.
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Many users often encounter problems when using a constant temperature and humidity test chamber. For example, when the temperature in the cabinet rises to the set temperature, the temperature continues to increase. What is the main reason for this?
From this point of view, the working principle of the constant temperature and humidity test chamber is known: The temperature in the room is caused by the resistance wire R doing work. To make the high-temperature aging chamber constant temperature, it is necessary to require the temperature to rise to the set value, the resistance wire stops doing work; when the temperature drops slightly, the resistance wire can continue to work.
The constant temperature within the set range of the high temperature aging laboratory is maintained by the automatic turning on and off of the input power. The on and off of the power supply is accomplished by the relay contact and release. The action of the relay is in turn controlled by the electron gate. Therefore, the normal operation of the electronic tube directly affects the contact and release of the relay contacts. If the temperature in the high-temperature aging room rises to the set value, the power supply cannot be disconnected and heating continues, indicating that the relay contact has not been released.
[Temperature and humidity test chamber temperature abnormal solution]:
If the low temperature does not reach the test index, it is necessary to observe the temperature change, whether the temperature drop is very slow, or whether the temperature rises after the temperature reaches a certain value. The former must check to see if the studio is to be dried before the low temperature test. After the studio is kept dry, the test sample is put into the workroom and tested again. The test sample in the work chamber is placed too much, so that the wind in the work chamber cannot be fully cycled. After eliminating the above reasons, it is necessary to consider whether it is Faults in the refrigeration system, so we must ask professionals for maintenance. The latter phenomenon is caused by the poor use environment of the constant temperature and humidity testing machine. The ambient temperature of the equipment and the location (the distance between the cabinet and the wall) must meet the requirements.